• [1]

    C. Baglin et al. (NA38 Collab.), Phys. Lett., -(1989)471.[2] T . Matsui and H. Sntz, Phys. lett., B178(1986)416.[3] 0.Drapier et al. (NA38 Collab.), Nucl. Phys., A544(1992)209c.[4] C. Gerschel and J. Hiifner, Z. Phys., -(1992)171.[5] S.J. Brodsky and A.H. Muller, Phys. Lett., Br86(1988)285; J. Hufner and M. Simbel, Phys.Lett., B258(1991)465.[6] C. Baglin et al. (NA38 Collab.), Phys. Lett., B255(1991)459; C. Rncca, 私人通信.[7] S.J. Brodsky, Nucl. Phys.; A544(1992)223c.[8] C. Baglin et al. (NA38 Collab.), Phys. Lett., B282(1991), 362; B268(1991) 453; Nucl. Phys.,A544(1992)95c.[9] S. Gupta and H. Satz, Phys. Lett., B283(1992)439.